#include<algorithm>

#include<cmath>

#include<cstdio>

(资料图片仅供参考)

#include<iostream>

using namespace std;

int main(){

int m,n,sum=0;

cin>>m>>n;

for(int i=m;i<=n;i++){

if(i%17==0){

sum+=i;

}

}

cout<<sum;

return 0;

}